Wood-turning lathe.



PATENTBD NOV. 28, 1905.

F. R. INMAN.

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WOOD TURNING LATHE. APPLICATION FILED APR. 1s, 1904. z SHEETS-SHEET 2.

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MMQAIM FRED R. INMAN, OF PROVIDENCE, RHODE ISLAND.

WOOD-TURNING LATHE.

Specicaton of Letters Patent.

Patented Nov. 28, 1905.

Application filed April 13,1904. Serial No. 202,949.

To a/ZZ whom, it may concer-71,.'

Be it known that I, FRED R. INMAN, a citizen of the United States, residing at Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in VVood-Turning Lathes, of which the following is a specification, reference being had therein to the accompanying drawings..

Like numerals indicate like parts.

Figure 1 is a side elevation of my improved wood-turning lathe. Fig. 2 is a front elevation of the same. Fig'. 3 is a front elevation ot' the head-stock. Fig. 4 is a side elevation of the same. Fig. 5 is a rear elevation of said head-stock. Fig. 6 is a top plan view of the head-stock. Fig. 7 is a side elevation of one of the cap-pieces for the head-stock. Fig. 8 is a front elevation of the same. Fig. 9 is a bottom plan view of the same. Fig. 10 is a side elevation of the head-stock pulley. Fig. 11 is a view of the same, one-half being shown in front elevation and one-half in diametrical section. Fig. 12 is a top plan view of the slide and socket of the tool-rest. Fig.` 13 is a side elevation of the same. Fig. 14 is a front elevation ofthe standard which is at the tail-stock end of my improved lathe. Fig. 15 is a side elevation of said standard. Fig. 16 is a rear elevation of said standard. Fig. 17 is a side elevation of the treadle. Fig. 18 is a top plan view of the same. Fig. 19 is a View of the treadle, partly in side elevation and party in section, as shown in position upon the treadle-bar, and in combination with a collar set upon said bar, the bar also being shown in cross-section. Fig. 20 is a front elevation of the back plate of the tail-stock. Fig. 21 is a side elevation of the same. Fig. 22 is a rear elevation of the clamping-plate of the standard ,at the tail-stock end of the lathe. Fig. 23 is a side elevation of the same. Fig. 24 is afront elevation of the tail-stock. Fig. 25 is a side elevation of the same. Fig. 26 is a rear elevation of the same. Fig. 27 is a side elevation of the crank. Fig. 28 is an end elevation ot' the same. Fig. 29 is a top plan view of the clamping-screw for the tail-stock. Fig. 30 is a side elevation 'of the same. Fig. 31'is a side elevation of the hand-wheel for the tail-stock. Fig. 32 is a diametrical section of the same. Fig. is a central longitudinal section of the spindle for the headstock. Fig. 34 is an end view of the same. Fig. 35 is a central longitudinal section of the sleeve for the tail-stock. view of the same. Fig. 37 is a side elevation of the screw for the tail-stock. Fig. 38 is an end view of the same. Fig. 39 is a side elevation of the pitman for the treadle-bar. Fig. 4() is a top plan view of the same. Fig. 41 is a front elevation of the bracket of the toolrest. Fig. 42 is a side elevation of the same. Fig. 43 is a rear elevation of the same. Fig. 44 is a side elevation of one of the collars for the treadle-bar. Fig. 45 is a front elevation of the same. Fig. 46 is a front elevation of one of theY hand-operated nuts for clamping the tail-stock or support for the tool-rest. Fig. 47 is a central longitudinal section of the saine. Fig. 48 is a side elevation of the pitman. Fig. 49 is an elevation of the rear plate of the tool-rest. Fig. 50 is a side elevation of the same.

My invention relates to theclass of woodturning lathes; and it consists of the novel construction and combination of the several parts, as hereinafter described, and specifically set forth in the claim.

In the drawings, 1 and 2 represent the two standards of the machine, 1 being the standard at the head-stock end and 2 being the standard at the tail-stock end. The standard 1 has the two feet3 3, the cross-bar 4, the crossbar 5, and at its top the upright plate 6, all these being integral and preferably formed of cast metal. Adjacent tothe bottom of the plate 6 the top of the standard 1 has a horizontal edge 7. The inner side of the plate 6 has two parallel concave seats, as shown in Fig. 1, and also two bosses 8 for clamping .screws and the two journals 9 and lO. The

standard 2 has the two feet 11 11, the crossbar 12, the cross-bar 13, and at its top the upright plate 14, all these being integral and preferably formed of cast metal. Adjacent to the bottom of the plate 14 the top ot' the standard 2'has a horizontal surface 15. The inner side of the plate 14 has two parallel concave seats 16, as seen in Fig. 15, and also the boss 17 for a clamping-screw and the two journals 18 and 19. The head-stock 2O has two integral posts 21 22, each of which is provided Witli a semitubular journal, as shown at 23 and 24. It has a rectangular shoulder, as seen at 25 in Fig. 1, which extends over the top of the plate 6. An integral base '26 extends downward to or near the horizontal surface 7 of the standard 1. The inner side of said base 26 has the two parallel concave seats Fig. 36 is an end shown in Fig. 1.` The base 26 has the two bosses 27 for clamping-screws. The clamping-plate for the standard 2 is shown at 28 and is provided with two parallel concave seats 29 and a boss 30 for a clamping-screw. The seats 16 16 register with the seats 29 29. In like manner the seats of the plates 6 and 26, Fig. 1, register with each other.

Two parallel cylindrical or tubular rods 30 31 extend from side to side of the lathe and at one end thereof are inserted in the seats of the plate 6 and base 26, as seen in Figs. 1 and 2, and at the opposite end are inserted in the seats 16 29 of the plates 14 and 28, as seen in Fig. 2. When the rods 30 31 are so inserted, clamping-screws 32 32, passing through the bosses 8 8 of the plate 6 and through the bosses 27 27 of the base 26, draw said parts 6 and 26 together into lirrn contact with said rods 30 31, and so fasten said rods securely in position, and a clamping-screw 33, passing th rough the boss 17 of the plate 14 and through the boss 30 of the plate 28, draws said plates 14 and 28 together' into firm contact with said rods 30 31, and so fastens said rods securely in position. A treadle bar or rod 34 is seated in the journals 10 and 18 of the standards 1 and 2. Thus the standards 1 2, with their plates 6 14, the base 26 of the laead-stock, the clamping-plate 28, the rods 3() 31, and the treadle-bar 34, when so connected and clamped by the screws 32 33 constitute a strong rigid frame for the machine.

The driving-wheel 35 is mounted on the stud 36, which is supported in the journal 9 of the standard 1. Said wheel 35 has another wheel 37 connected therewith, as seen in Fig. 2, in order to give a dierent speed whenever desired by shifting the belt thereto from the Wheel 35. The wheel 35 has a crank-arm 38, upon which the hook end 39 of a pitman 40 is mounted. The opposite or lower end of the pitman 4() is mounted on a stud 41, which projects from the free end of an arm 42. The arm 42 is fastened on the treadle rod or bar 34 and held in position by a set-screw, as shown in Fig. 2.

' The treadle 43 is substantially a T-shaped piece, as seen in Fig. 18, having the two arms projecting at right angles and each arm ter- Ininating in a hook 44, which extends at a right angle from its arm. The treadle 43 has at its free end a curved footboard 45. Two collars 46 are adjustably mounted on the treadle-bar 34, and each has a boss 47, through which a set-screw 48 passes to secure the collar firmly in position upon the treadle-bar 34.

On the journals 23 24 of the posts 21 22 of the head-stock 20 are the semitubular bearing-caps or cap-pieces 49, having half-round concave seats, Fig. 7, and held in position by the screws 50. 1n these journals 23 24 and cap-pieces 49 is mounted the spindle 51 of the pulleys 52 53, the pulley 53 being of smaller diameter'. A belt 54 from the wheel 35 drives this smaller pulley, as shown in Fig. 2, or a different speed is obtained by passing the belt over the pulley 52 and wheel 37.

The tool-rest 55 consists of the usual horizontal bar having a vertical post. This post is adjustably mounted in the tubular socket 56 of a slide or block 57 and is held in its adjusted position by the set-screw 58. A bracket 59 has aoentral vertical portion, which is provided with a tubular boss 60, having an internal screw-thread. This vertical portion of the bracket 59 terminates at its bottom in a curved hook 61, about ninety degrees in extent, as seen in Fig. 42. The horizontal portion of the bracket 59 has on its under side two hooks 62, having a curvature of about one hundred and eighty degrees, as seen in Fig. 42. The slide or block 57 is longitudinally slotted, as shown in Fig. 12, and is adjustably mounted on thebracket 59, being held in its adjusted position thereon by the set-screw 63, which passes through a boss on the side of the tube 56, as seen in Fig. 12.

The tail-stock consists of an upright portion or post 64, provided with a base 65, and also having at its upper end a sleeve 66, preferably integral and made with a longitudinal opening or slot 67, Figs. 24, 25. The sleeve 66 has the two integral bosses 68 on one side thereofl and in line with each other and they are tapped for the reception of a clamping-screw. The base 65 of the tail-stock 64 has the two hooks 69 and half-round sockets 70 at the upper portion and terminates at the bottom in the hook 71, which has a curvature of about one hundred and eighty degrees, as seen in Figs. 24 and 25. The base 65 also has a central boss 72, which has a screw-hole tapped therein. A clamping-plate 73 (shown in Figs. 2O and 21) fits into and upon the rear surface of the base 65 of the tail-stock 64. It is provided with a tongue or projection ,74, which fits between the two hooks 69 of the base 65 and is curved, as shown at 75 in Fig. 21, in the same arc as that of the sockets of said base. (Shown in Fig. 25.) It has a central boss 76 tapped for the reception of a clamping-screw and terminates in a hook 77 about one hundred and eighty degrees in extent and forming, with the hook 71, a complete circle when said plate 73 and base 65 are placed in juxtaposition.

In Figs. 49 and 50 is shown the clampingplate 78, which lits upon the rear surface of the vertical portion of the bracket 59. It has a tongue or projection 79, which enters between the two hooks 62 of said bracket, the central boss 80,which is tapped for` the reception of a clamping-screw, and also a hook 81, whose curvature is about one hundred and eighty degrees in extent. This tongue or projection 79 is curved, as shown in Fig. 50. A screwthreaded plug 82 (separately shown in Fig. 37) has a square head 83 and is mounted engageably in the threaded portion of the sleeve 84. (Shown in Fig. 35.) A hand-wheel 85,Fig.

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31, is fastened upon the head 83 of the plug' 82. The sleeve 84 has a central tubular chamber is also provided with a stud or pin 88, which when the parts are assembled enters the slot 67 of the sleeve 66 of the tail-stock 64. In the tapering bore 87 is mounted, as usual, the tail-stock center 89, whose conically-shaped stem fits in said bore.

In Figs. 46 and 47 is shown the hand-oper ated clamping-nut 90, by which the base 65 of the tail-stock 64 and the plate 73 are fastended together. The bracket 59 and the plate 78 are fastened together in the same manner. A clamping-screw (not shown) is passed through the holes in the base 65 and plate 73 of the tail-stock, and the nut 99 is screwed upon the end of said screw, as seen in Figs. 1 and 2. In the same manner a clamping-screw (not shown) is passed through the holes in the bracket 59 and plate 78, and another nut 90 is screwed thereon, as illustrated in Figs. 1 and 2. In Figs. 29 and 30is shown the nut 91, having a handle 92 and engaging' with the clamping-screw 93, which passes through the bosses 68 68 of the sleeve 66 of the tail-stock.

The spindles 51, upon which the hub of the pulleys 52 and 53 is mounted, is shown separately in Fig. 33. It has the two circumferential grooves 94 and the collar 95. Its bore is tapered outwardly, as shown at 96, for the reception of the conicallyshaped stem of the live-center 97. In Figs. 3 and 4 there are shown ribs or projections 98 on the upper surface of the journals 23. The cap-pieces 49 have in the under surfaces grooves or channels 99 109 for the reception of these ribs or projections, as seen in Figs. 6 and 9. The cap-pieces 49 have on the central upper portion bosses' 101, as seen in Figs. 7 and 8, and these bosses have a vertical bore, as indicated by dotted lines in Fig. 8. As shown in Figs. 4 and 7 in dotted lines, there are 'semicircular grooves formed in the concave wearing-surfaces of the cappiece and journal.

Having thus described the several parts of my improved lathe, I will first explain how said parts are assembled and will then explain the purposes and functions of such of the parts as are novel in the art to which my invention pertains.

My improved lathe is set up by inserting the bars or tules 39 31 in the sockets 16 16 of the plate 14 of the ,standards 2 and in the corresponding sockets'of the plates 6 of the standard 1. The base 26 of the head-stock 2O is then put in the position illustrated in Figs. 1 and 2, and the clamping-screws 32 32 are used to draw together the plate 6 and the headstock base 26 to firmly embrace and hold the ends of the rods or tubes 39 31 and are secured in place by nuts, as shown in Figs. 1 and 2. The treadle-bar 34 is placed in the journals 10 l and 18 of the standards 1 and 2. The opposite ends of the bars or rods 30 31 are inserted in the sockets 16 16 of the plate 14 of the standard 2 and in the sockets 29 29 of the clamping-plate 28, and a clamping-screw 33, passing through said plates 14 and 28, draws them into firm contact with the bars or rods 30 31 and is secured in place by a nut, as shown in Fig. 2. Thus is provided a very strong and rigid frame and lathe-bcd constructed in a remarkably cheap and eective manner.

The tail-stock is detachable, but is easily and conveniently mounted on the bars or rods 30 31 by means of the hooks 69 71 of the tailstock base 65 in combination with the hook or curved tongue 74 and the hook 77 of the tailstock clamping-plate 73. These hooks engage and surround the bars or rods 30 31, and the clamping-screw, which passes th rough the tapped bosses 72 and 76 of said base 65 and plate 73, respectively, draws said base and plate into firm contact with said bars or rods as the clamping-nut 90 is screwed thereon. By slightly loosening the nut 9() the tail-stock is loose and movable on said bars or rods 30 31, and so may be adjusted in proper position relatively to the work and when so adjusted is fastened in such position by tightening the nut 90 on the clamping-screw. Similarly the tool-rest is mounted upon the bars or rods 30 31 (and is capable of adjustment thereon) by means of the hooks 61 62 of the bracket 59 and the hooks 79 81 of the tool-rest-clamping plate 78, which hooks firmly embrace the bars or rods 30 31 and are drawn into holding contact therewith by the clamping-nut 90 engaging with the clamping-screw, which passes through the tapped bosses 60 8O of said brackets and clamping-plate, respectively. The tool-rest 55 is movable to or from the Work by means of the slot in the slide or block 57, which supports the tubular socket 56, in which the stem of the tool-rest is inserted, and the set-screw 63 holds the tool-rest in its said adjusted position.

The parts of the tail-stock are assembled as follows: The sleeve 84 is inserted inthe sleeve` 66 in such manner that the pin or stud 88 of the former extends into the slot 67 of the latter. The plug 82 is screwed into the sleeve 84, and the wheel 85 is fastened on the head 83 of the plug 82. The tail-stock center 89 is seated in the tapering part 87 of the sleeve 84. By turning the wheel 85 the screw-plug 82 is turned; but as the sleeve 84 is prevented from rotating because its pin or stud 88 enters and moves along the slot 67 of the sleeve 66 the sleeve 84 has only a linear movement, and thus the tail-stock center 89 is moved longitudinally as may be necessary to adjust it to the work. 'When the proper adjustment has been made in this manner, the clamping-screw in the bosses 68 68 is tightened, thus drawing the edges of the slot 67 into firm contact with IIC the pin or stud88 of the sleeve 84 and locking the tail-slot center 89 in position and properly holding' the work during operation.

The purpose of the rib or projection and the groove or channel in the journal and cap-piece of the head-stocl as illustrated in Figs. 3 to 8, inclusive, is to allow for compensation for wear. Then the journal has been worn irregularly or in such manner as to interfere with the proper working of head-stock spindle, the cap-screw which is nearest to the rib is loosened and the other cap-screw is tightened, thus slightly rocking the cap-piece upon the journal and taking up the wear. l

When the cap-pieces 49 are secured to the journals 23 of the head-stock, melted Babbitt metal is poured through the hole in the boss 101 ot' the cap-piece (see Fig. 8) and Howing into the circumferential grooves 94 94 of the spindle 5l (shown in Fig. 33) and into the semi-annular grooves of the cap-pieces and journals, (see Figs. 4 and 7,) which register with said circumferential grooves of the spindle 5l, forms loose collars on said spindle and prevents the spindle from moving longitudinally, although allowing it to rotate.

By means of the collars 46, which slide on the treadle-bar 34 and may be set adjustahly thereon, together with the hooks 44 44 of the arms of the treadle 43, contiguous to said collars, the treadle can be secured on the treadlebar at any part or' the length of said bar, as may be desired.

I claim as a novel and useful invention and desire to secure by Letters Patent-- In a lathe, the combination ot' two standards each having a plate at its upper end with two parallel concave seats therein, a head-stock having a base provided with two parallel concave seats, a clamping-plate having two parallel concave seats, two bars or rods mounted at their ends in said seats respectively, and clamping-screws adapted to clamp said standard-plates, clamping-plate and head -stocln substantially as shown and for the purpose specified.

In testimony whereof I affix my signature in presence of two witnesses.

FRED R. INMAN.

WVitnesses:

MABEL FOSTER, WARREN R. Planen. 

